<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-button type="primary">添加角色</el-button>
      </el-row>
      <!-- 角色列表区 -->
      <el-table :data="rolesList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              :key="item1.id"
              v-for="(item1, i1) in scope.row.children"
            >
              <!--渲染一级权限  -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRolesById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!--渲染二级 三级权限  -->
              <el-col :span="19">
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  :key="item2.id"
                  v-for="(item2, i2) in item1.children"
                >
                  <el-col :span="6">
                    <el-tag
                      closable
                      type="success"
                      @close="removeRolesById(scope.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      closable
                      type="warning"
                      :key="item3.id"
                      v-for="item3 in item2.children"
                      @close="removeRolesById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>
                   {{ scope.row }}
                     </pre
            > -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="roleName" label="角色名称"></el-table-column>
        <el-table-column prop="roleDesc" label="角色描述"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit"
              >编辑</el-button
            >
            <el-button size="mini" type="danger" icon="el-icon-delete"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightsDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightsDialogVisible"
      width="50%"
      @close="setRightsDialogClosed"
    >
      <!-- 树形控件 -->
      <el-tree
        ref="treeRef"
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightsDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //所以角色列表数据
      rolesList: [],
      setRightsDialogVisible: false,
      // 所有权限的数据
      rightsList: [],
      // 树形控件的属性绑定对象
      treeProps: {
        children: 'children',
        label: 'authName',
      },
      defKeys: [],
      // 当前角色ID
      roleId : ''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    // 获取权限列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status != 200)
        return this.$message.error('获取角色列表失败！')
      this.rolesList = res.data
      // console.log(res.data)
    },
    // 根据ID删除权限
    async removeRolesById(role, rightId) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该权限, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)
      if (confirmResult != 'confirm') {
        return this.$message.info('取消了删除')
      }
      //  console.log("删除");
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )
      if (res.meta.status != 200) return this.$message.error('删除权限失败！')
      // this.getRolesList()
      role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightsDialog(role) {
      this.roleId=role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status != 200)
        return this.$message.error('获取权限列表失败！')
      this.rightsList = res.data
      // console.log(res.data)
      this.getLeafKeys(role, this.defKeys)
      this.setRightsDialogVisible = true
    },
    // 通过递归获取角色下所有的第三级权限的id数组
    getLeafKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach((item) => {
        this.getLeafKeys(item, arr)
      })
    },
    // 监听分配权限弹框的关闭事件
    setRightsDialogClosed(){
      this.defKeys=[]

    },
    //为角色分配权限
  async  allotRights(){
       const keys=[
         ...this.$refs.treeRef.getCheckedKeys(),
         ...this.$refs.treeRef.getHalfCheckedKeys()
       ]
      //  console.log(keys);
      const idstr=keys.join(',')
       const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`,{
         rids :idstr
       })
      //  console.log(res);
      if (res.meta.status != 200)
        return this.$message.error('分配权限失败！')
        this.$message.success('分配权限成功！')
        this.getRolesList()
        this.setRightsDialogVisible=false
      
    }
  },
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>